Exam 1 Key - Chem 310N Spring 2008 Professor Krische...

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Chem. 310N, Spring 2008 Professor Krische Midterm Exam I Average = 50 Grading Scale 90-100 = A+ 80-90 = A 70-80 = A- 65-69 = B+ 60-64 = B 55-59 = B- 50-54 = C+ 45-49 = C 40-44 = C- 37-40 = D+ 33-36 = D 30-32 = D- 0-29 = F
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Name: Problem 1. (4 points) 2. (6 points) 3. (24 points) 4. (20 points) 5. (4 points) 6. (20 points) 7. (10 points) 8. (12 points) Total Points: /100
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1. (4 points) You have enlisted as an undergraduate research assistant in the labs of Dr. Krische. Your graduate student mentor, tormented by over-exposure to Dr. Krische’s bad jokes, finally snapped and in the throes of madness removed the labels corresponding to the compounds given below. After tranquilizing your graduate student mentor, you obtain 1 H NMR spectra (labeled A - D ) corresponding to the four mystery compounds. Your task: match the compound to its spectrum by writing the letter of the spectra in the box beneath the compound to which it corresponds . H 3 C H 2 C O O CH 3 O H 2 C O H 2 C CH 3 H 3 C O O H 2 C CH 3 D A C B Compound A
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Compound B Compound C Compound D
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2. (6 points) How many signals would you expect to observe in the 13 C NMR spectra of the following compounds. Write the anticipated number of signals in the box provided (Hint:
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This note was uploaded on 04/09/2008 for the course CH 310n taught by Professor Iverson during the Spring '08 term at University of Texas.

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Exam 1 Key - Chem 310N Spring 2008 Professor Krische...

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